918 lines
29 KiB
Rust
918 lines
29 KiB
Rust
use std::{
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convert::TryFrom,
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mem::{self, size_of},
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};
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use serde::de::{
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self, value::BorrowedBytesDeserializer, DeserializeSeed, EnumAccess, Error as DeError,
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IntoDeserializer, MapAccess, SeqAccess, VariantAccess, Visitor,
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};
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use crate::error::Error;
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/// A struct that deserializes the VAA payload wire format into rust values.
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pub struct Deserializer<'de> {
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input: &'de [u8],
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}
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impl<'de> Deserializer<'de> {
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/// Construct a new instance of `Deserializer` from `input`.
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pub fn new(input: &'de [u8]) -> Self {
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Self { input }
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}
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/// Should be called once the value has been fully deserialized. Returns any data left in the
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/// input buffer after deserialization.
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pub fn end(self) -> &'de [u8] {
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self.input
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}
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}
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// This has to be a macro because `<type>::from_be_bytes` is not a trait function so there is no
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// trait bound that we can use in a generic function.
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macro_rules! deserialize_be_number {
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($self:ident, $ty:ty) => {{
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const LEN: usize = size_of::<$ty>();
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if $self.input.len() < LEN {
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return Err(Error::Eof);
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}
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let (data, rem) = $self.input.split_at(LEN);
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let mut buf = [0u8; LEN];
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buf.copy_from_slice(data);
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$self.input = rem;
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<$ty>::from_be_bytes(buf)
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}};
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}
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impl<'de, 'a> de::Deserializer<'de> for &'a mut Deserializer<'de> {
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type Error = Error;
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fn deserialize_any<V>(self, _: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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Err(Error::DeserializeAnyNotSupported)
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}
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fn deserialize_ignored_any<V>(self, _: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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Err(Error::DeserializeAnyNotSupported)
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}
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fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let v = deserialize_be_number!(self, u8);
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match v {
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0 => visitor.visit_bool(false),
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1 => visitor.visit_bool(true),
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v => Err(Error::custom(format_args!(
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"invalid value: {v}, expected a 0 or 1"
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))),
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}
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}
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fn deserialize_i8<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i8(deserialize_be_number!(self, i8))
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}
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fn deserialize_i16<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i16(deserialize_be_number!(self, i16))
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}
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fn deserialize_i32<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i32(deserialize_be_number!(self, i32))
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}
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fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i64(deserialize_be_number!(self, i64))
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}
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fn deserialize_i128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_i128(deserialize_be_number!(self, i128))
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}
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fn deserialize_u8<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u8(deserialize_be_number!(self, u8))
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}
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fn deserialize_u16<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u16(deserialize_be_number!(self, u16))
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}
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fn deserialize_u32<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u32(deserialize_be_number!(self, u32))
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}
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fn deserialize_u64<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u64(deserialize_be_number!(self, u64))
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}
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fn deserialize_u128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_u128(deserialize_be_number!(self, u128))
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}
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fn deserialize_f32<V>(self, _: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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Err(Error::Unsupported)
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}
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fn deserialize_f64<V>(self, _: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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Err(Error::Unsupported)
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}
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fn deserialize_char<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let v = deserialize_be_number!(self, u32);
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char::try_from(v)
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.map_err(|e| Error::custom(format_args!("invalid value {v}: {e}")))
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.and_then(|v| visitor.visit_char(v))
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}
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fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let len = usize::from(deserialize_be_number!(self, u8));
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if self.input.len() < len {
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return Err(Error::Eof);
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}
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let (data, rem) = self.input.split_at(len);
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self.input = rem;
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std::str::from_utf8(data)
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.map_err(Error::custom)
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.and_then(|s| visitor.visit_borrowed_str(s))
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}
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#[inline]
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fn deserialize_string<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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self.deserialize_str(visitor)
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}
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fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let len = usize::from(deserialize_be_number!(self, u8));
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if self.input.len() < len {
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return Err(Error::Eof);
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}
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let (data, rem) = self.input.split_at(len);
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self.input = rem;
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visitor.visit_borrowed_bytes(data)
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}
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#[inline]
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fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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self.deserialize_bytes(visitor)
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}
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#[inline]
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fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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// There are no optional values in this data format.
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visitor.visit_some(self)
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}
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#[inline]
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fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_unit()
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}
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#[inline]
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fn deserialize_unit_struct<V>(
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self,
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_name: &'static str,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_unit()
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}
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#[inline]
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fn deserialize_newtype_struct<V>(
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self,
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name: &'static str,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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if name == crate::raw::TOKEN {
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let rem = mem::take(&mut self.input);
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visitor.visit_newtype_struct(BorrowedBytesDeserializer::new(rem))
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} else {
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visitor.visit_newtype_struct(self)
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}
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}
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fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let len = usize::from(deserialize_be_number!(self, u8));
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visitor.visit_seq(BoundedSequence::new(self, len))
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}
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#[inline]
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fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_seq(BoundedSequence::new(self, len))
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}
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#[inline]
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fn deserialize_tuple_struct<V>(
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self,
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_name: &'static str,
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len: usize,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_seq(BoundedSequence::new(self, len))
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}
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fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let len = usize::from(deserialize_be_number!(self, u8));
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visitor.visit_map(BoundedSequence::new(self, len))
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}
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#[inline]
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fn deserialize_struct<V>(
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self,
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_name: &'static str,
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fields: &'static [&'static str],
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_seq(BoundedSequence::new(self, fields.len()))
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}
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fn deserialize_enum<V>(
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self,
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_name: &'static str,
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_variants: &'static [&'static str],
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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let variant = deserialize_be_number!(self, u8);
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visitor.visit_enum(Enum { de: self, variant })
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}
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fn deserialize_identifier<V>(self, _: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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Err(Error::Unsupported)
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}
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}
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impl<'de, 'a> VariantAccess<'de> for &'a mut Deserializer<'de> {
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type Error = Error;
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#[inline]
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fn unit_variant(self) -> Result<(), Self::Error> {
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Ok(())
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}
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#[inline]
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fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, Self::Error>
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where
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T: DeserializeSeed<'de>,
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{
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seed.deserialize(self)
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}
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#[inline]
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fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_seq(BoundedSequence::new(self, len))
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}
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#[inline]
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fn struct_variant<V>(
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self,
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fields: &'static [&'static str],
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: Visitor<'de>,
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{
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visitor.visit_seq(BoundedSequence::new(self, fields.len()))
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}
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}
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struct BoundedSequence<'de, 'a> {
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de: &'a mut Deserializer<'de>,
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count: usize,
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}
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impl<'de, 'a> BoundedSequence<'de, 'a> {
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fn new(de: &'a mut Deserializer<'de>, count: usize) -> Self {
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Self { de, count }
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}
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}
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impl<'de, 'a> SeqAccess<'de> for BoundedSequence<'de, 'a> {
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type Error = Error;
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fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Self::Error>
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where
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T: DeserializeSeed<'de>,
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{
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if self.count == 0 {
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return Ok(None);
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}
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self.count -= 1;
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seed.deserialize(&mut *self.de).map(Some)
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}
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#[inline]
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fn size_hint(&self) -> Option<usize> {
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Some(self.count)
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}
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}
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impl<'de, 'a> MapAccess<'de> for BoundedSequence<'de, 'a> {
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type Error = Error;
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fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
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where
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K: DeserializeSeed<'de>,
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{
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if self.count == 0 {
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return Ok(None);
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}
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self.count -= 1;
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seed.deserialize(&mut *self.de).map(Some)
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}
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#[inline]
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fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>
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where
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V: DeserializeSeed<'de>,
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{
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seed.deserialize(&mut *self.de)
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}
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#[inline]
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fn size_hint(&self) -> Option<usize> {
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Some(self.count)
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}
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}
|
|
|
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/// Tells serde which enum variant it should deserialize. Enums are encoded in the byte stream as a
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/// `u8` followed by the data for the variant but unfortunately, serde doesn't currently support
|
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/// integer tags (see https://github.com/serde-rs/serde/issues/745). Instead we format the integer
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/// into its string representation and have serde use that to determine the enum variant. This
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/// requires using `#[serde(rename = "<integer tag>")]` on all enum variants.
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///
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/// # Examples
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///
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/// ```
|
|
/// use std::borrow::Cow;
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///
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/// use serde::{Deserialize, Serialize};
|
|
///
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/// #[derive(Serialize, Deserialize)]
|
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/// enum TestEnum<'a> {
|
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/// #[serde(rename = "19")]
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/// Unit,
|
|
/// #[serde(rename = "235")]
|
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/// NewType(u64),
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/// #[serde(rename = "179")]
|
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/// Tuple(u32, u64, Vec<u16>),
|
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/// #[serde(rename = "97")]
|
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/// Struct {
|
|
/// #[serde(borrow, with = "serde_bytes")]
|
|
/// data: Cow<'a, [u8]>,
|
|
/// footer: u32,
|
|
/// },
|
|
/// }
|
|
/// #
|
|
/// # assert!(matches!(serde_wormhole::from_slice(&[19]).unwrap(), TestEnum::Unit));
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/// ```
|
|
struct Enum<'de, 'a> {
|
|
de: &'a mut Deserializer<'de>,
|
|
variant: u8,
|
|
}
|
|
|
|
impl<'de, 'a> EnumAccess<'de> for Enum<'de, 'a> {
|
|
type Error = Error;
|
|
type Variant = &'a mut Deserializer<'de>;
|
|
|
|
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
|
|
where
|
|
V: DeserializeSeed<'de>,
|
|
{
|
|
let mut buf = itoa::Buffer::new();
|
|
seed.deserialize(buf.format(self.variant).into_deserializer())
|
|
.map(|v| (v, self.de))
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use std::{
|
|
borrow::Cow,
|
|
collections::BTreeMap,
|
|
io::{Cursor, Write},
|
|
iter::FromIterator,
|
|
mem::size_of,
|
|
};
|
|
|
|
use serde::{Deserialize, Serialize};
|
|
|
|
use crate::{from_slice, Error};
|
|
|
|
#[test]
|
|
fn empty_input() {
|
|
let e = from_slice::<u8>(&[]).expect_err("empty buffer deserialized");
|
|
assert!(matches!(e, Error::Eof))
|
|
}
|
|
|
|
#[test]
|
|
fn trailing_data() {
|
|
macro_rules! check {
|
|
($buf:ident, $ty:ty) => {
|
|
let e = from_slice::<$ty>(&$buf)
|
|
.expect_err("deserialized with trailing data");
|
|
assert!(matches!(e, Error::TrailingData));
|
|
};
|
|
($buf:ident, $($ty:ty),*) => {
|
|
$(
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|
check!($buf, $ty);
|
|
)*
|
|
};
|
|
}
|
|
let buf = 0x9ab0_8c9f_8462_2f63u64.to_be_bytes();
|
|
check!(buf, i8, i16, i32, u8, u16, u32);
|
|
}
|
|
|
|
#[test]
|
|
fn bool() {
|
|
let v: bool = from_slice(&[0u8]).unwrap();
|
|
assert!(!v);
|
|
|
|
let v: bool = from_slice(&[1u8]).unwrap();
|
|
assert!(v);
|
|
|
|
for v in 2..=u8::MAX {
|
|
from_slice::<bool>(&[v]).unwrap_err();
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn integers() {
|
|
macro_rules! check {
|
|
($v:ident, $ty:ty) => {
|
|
// Casting an integer from a larger width to a smaller width will truncate the
|
|
// upper bits.
|
|
let expected = $v as $ty;
|
|
let buf = expected.to_be_bytes();
|
|
|
|
let actual: $ty = from_slice(&buf).expect("failed to deserialize integer");
|
|
assert_eq!(expected, actual);
|
|
};
|
|
($v:ident, $($ty:ty),*) => {
|
|
$(
|
|
check!($v, $ty);
|
|
)*
|
|
};
|
|
}
|
|
|
|
// Value randomly generated from `dd if=/dev/urandom | xxd -p -l 16`.
|
|
let v = 0x84f2_e24f_2e8a_734e_5a5f_def6_c597_f232u128;
|
|
check!(v, i8, i16, i32, i64, i128, u8, u16, u32, u64, u128);
|
|
}
|
|
|
|
#[test]
|
|
fn char() {
|
|
let chars = ['\u{0065}', '\u{0301}'];
|
|
let mut buf = [0u8; size_of::<u32>() * 2];
|
|
let mut cursor = Cursor::new(&mut buf[..]);
|
|
for c in chars {
|
|
cursor.write_all(&u32::from(c).to_be_bytes()).unwrap();
|
|
}
|
|
|
|
let (c1, c2): (char, char) = from_slice(&buf).unwrap();
|
|
let mut actual = String::new();
|
|
actual.push(c1);
|
|
actual.push(c2);
|
|
assert_eq!("é", actual);
|
|
}
|
|
|
|
#[test]
|
|
fn invalid_chars() {
|
|
for c in 0xd800u32..0xe000 {
|
|
from_slice::<char>(&c.to_be_bytes()).expect_err("deserialized invalid char");
|
|
}
|
|
|
|
// Spot check a few values in the higher range.
|
|
let invalid = [
|
|
0xa17c509eu32,
|
|
0xb4ee4bc8u32,
|
|
0x46055273u32,
|
|
0x3d3bb5fbu32,
|
|
0xeb82fddcu32,
|
|
0xe2777604u32,
|
|
0xe597554fu32,
|
|
0x12aa069fu32,
|
|
];
|
|
for c in invalid {
|
|
from_slice::<char>(&c.to_be_bytes()).expect_err("deserialized invalid char");
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn char_array() {
|
|
let expected = "Löwe 老虎 Léopard";
|
|
let mut buf = [0u8; size_of::<u32>() * 15];
|
|
let mut cursor = Cursor::new(&mut buf[..]);
|
|
for c in expected.chars().map(u32::from) {
|
|
cursor.write_all(&c.to_be_bytes()).unwrap();
|
|
}
|
|
|
|
let actual = from_slice::<[char; 15]>(&buf)
|
|
.map(String::from_iter)
|
|
.unwrap();
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn strings() {
|
|
let expected = "Löwe 老虎 Léopard";
|
|
let buf = IntoIterator::into_iter([expected.len() as u8])
|
|
.chain(expected.as_bytes().iter().copied())
|
|
.collect::<Vec<u8>>();
|
|
|
|
let actual = from_slice::<String>(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
|
|
let actual = from_slice::<&str>(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
|
|
let actual = from_slice::<&str>(&[0]).unwrap();
|
|
assert!(actual.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn maps() {
|
|
let buf = [
|
|
0x04, 0x78, 0x26, 0x20, 0x90, 0x48, 0x96, 0xd4, 0x18, 0x8b, 0xce, 0x62, 0xcd, 0x87,
|
|
0x7a, 0x36, 0x1a, 0x4c, 0x5e, 0x4f, 0x65, 0x84, 0x76, 0xb3, 0x9c, 0x7e, 0xb3, 0xfa,
|
|
0x99, 0x29, 0xf2, 0x8b, 0x7f,
|
|
];
|
|
|
|
let expected = BTreeMap::from([
|
|
(0x78262090u32, 0x4896d418u32),
|
|
(0x8bce62cd, 0x877a361a),
|
|
(0x4c5e4f65, 0x8476b39c),
|
|
(0x7eb3fa99, 0x29f28b7f),
|
|
]);
|
|
|
|
let actual = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
|
|
let actual = from_slice::<BTreeMap<u32, u32>>(&[0]).unwrap();
|
|
assert!(actual.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn empty_bytes() {
|
|
let buf = [0x0];
|
|
let actual: Vec<u8> = from_slice(&buf).unwrap();
|
|
assert!(actual.is_empty());
|
|
|
|
let actual: &[u8] = from_slice(&buf).unwrap();
|
|
assert!(actual.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn bytes() {
|
|
let buf = [
|
|
0x40, 0xc7, 0xe7, 0x8f, 0x91, 0x47, 0x32, 0xe0, 0x54, 0x4e, 0xde, 0x94, 0x27, 0xf4,
|
|
0xa9, 0x95, 0xd5, 0x96, 0xbe, 0x38, 0xd4, 0xa8, 0xca, 0xdd, 0x2e, 0xec, 0x95, 0x8d,
|
|
0xb3, 0x1a, 0xa3, 0x8a, 0x3b, 0xc2, 0xdb, 0x54, 0xac, 0x23, 0x85, 0xa7, 0xe8, 0x88,
|
|
0x39, 0xcb, 0xa4, 0x83, 0xde, 0xc4, 0x33, 0x83, 0x10, 0xba, 0x39, 0x55, 0x63, 0x67,
|
|
0xd9, 0x08, 0x19, 0xe2, 0x42, 0xf6, 0xc9, 0x5c, 0xe2,
|
|
];
|
|
let expected = &buf[1..];
|
|
|
|
let actual: Vec<u8> = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
|
|
let actual: &[u8] = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn max_bytes() {
|
|
let buf = [
|
|
0xff, 0x8a, 0xa0, 0x62, 0x4b, 0xf8, 0x5c, 0x2f, 0x71, 0x8b, 0xa2, 0xe4, 0x80, 0xbf,
|
|
0xb0, 0x15, 0xe0, 0xa3, 0x7c, 0xd3, 0x81, 0x56, 0x0d, 0x25, 0x13, 0x63, 0x23, 0xa1,
|
|
0x0f, 0x84, 0x7f, 0x3e, 0xed, 0x3a, 0xe1, 0xe2, 0x8e, 0x20, 0x33, 0x42, 0x83, 0x89,
|
|
0xa9, 0x0d, 0xe6, 0x58, 0xa5, 0xb4, 0x64, 0x60, 0x0f, 0x8f, 0xdf, 0x51, 0xd1, 0x00,
|
|
0x9d, 0x4b, 0x6e, 0x42, 0x04, 0x8b, 0xa2, 0xc8, 0x14, 0xed, 0x4f, 0x46, 0x64, 0xf5,
|
|
0xfd, 0xa6, 0xb2, 0x85, 0x63, 0x60, 0xa6, 0xb7, 0xd8, 0xed, 0x1a, 0xfd, 0x3f, 0x99,
|
|
0x6b, 0x3c, 0x85, 0xfe, 0x09, 0x04, 0xab, 0x9f, 0x56, 0xfa, 0x9f, 0x80, 0xd5, 0x93,
|
|
0x94, 0xa3, 0xc6, 0x62, 0xa8, 0x0e, 0x2d, 0xaa, 0x82, 0x94, 0xf9, 0x38, 0xf1, 0x58,
|
|
0x9e, 0x4c, 0x3e, 0x00, 0x64, 0x67, 0xda, 0x9e, 0x8b, 0x5c, 0xb1, 0xaa, 0xa8, 0x85,
|
|
0x43, 0xfd, 0x1a, 0xf2, 0xd8, 0xa7, 0xa7, 0x31, 0x55, 0x73, 0x91, 0x19, 0x5e, 0x43,
|
|
0xe3, 0xc0, 0xfb, 0xd0, 0xc6, 0xa8, 0x72, 0x43, 0x33, 0x2f, 0x69, 0x5c, 0x64, 0x92,
|
|
0xc7, 0x17, 0xb2, 0x30, 0x7a, 0xc1, 0x0a, 0x0d, 0x30, 0xbb, 0x94, 0xcb, 0x5c, 0x49,
|
|
0x88, 0xe0, 0xb4, 0x0b, 0x4e, 0xab, 0xd7, 0x8e, 0x2d, 0x82, 0x55, 0x33, 0xb1, 0x00,
|
|
0xa6, 0x89, 0x32, 0x59, 0x86, 0xde, 0xd7, 0x13, 0xea, 0x35, 0x0a, 0xa0, 0x50, 0x89,
|
|
0x95, 0xe7, 0xaf, 0xaa, 0x6a, 0x4e, 0x22, 0xb4, 0x7f, 0x2e, 0x49, 0x9d, 0x67, 0x3a,
|
|
0x95, 0x99, 0x75, 0x0a, 0x6b, 0x4d, 0x3e, 0x9d, 0x03, 0x1e, 0xfd, 0x82, 0xda, 0x02,
|
|
0x3e, 0x18, 0xe4, 0x26, 0xdf, 0xb0, 0x1d, 0x49, 0xce, 0x6c, 0xf8, 0xbc, 0xbe, 0x82,
|
|
0x27, 0x0e, 0x66, 0xa1, 0xc1, 0x85, 0xe2, 0xe1, 0x03, 0x83, 0xa4, 0x82, 0xf7, 0xd0,
|
|
0x66, 0x12, 0x8b, 0xc4,
|
|
];
|
|
let expected = &buf[1..];
|
|
|
|
let actual: Vec<u8> = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
|
|
let actual: &[u8] = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn tagged_enums() {
|
|
#[derive(Serialize, Deserialize)]
|
|
enum TestEnum<'a> {
|
|
#[serde(rename = "19")]
|
|
Unit,
|
|
#[serde(rename = "235")]
|
|
NewType(u64),
|
|
#[serde(rename = "179")]
|
|
Tuple(u32, u64, Vec<u16>),
|
|
#[serde(rename = "97")]
|
|
Struct {
|
|
#[serde(borrow, with = "serde_bytes")]
|
|
data: Cow<'a, [u8]>,
|
|
footer: u32,
|
|
},
|
|
}
|
|
|
|
assert!(matches!(from_slice(&[19]).unwrap(), TestEnum::Unit));
|
|
|
|
let buf = [235, 0xa7, 0xc5, 0x31, 0x9c, 0x8d, 0x87, 0x48, 0xd2];
|
|
if let TestEnum::NewType(v) = from_slice(&buf).unwrap() {
|
|
assert_eq!(v, 0xa7c5319c8d8748d2);
|
|
} else {
|
|
panic!();
|
|
}
|
|
|
|
let buf = [
|
|
179, 0x60, 0xfb, 0x4d, 0x0d, 0xc4, 0x98, 0x40, 0x65, 0xf5, 0xdb, 0xbf, 0x3c, 0x05,
|
|
0xa9, 0xca, 0xb9, 0xe7, 0x96, 0x3b, 0x74, 0xfa, 0x82, 0xb2,
|
|
];
|
|
if let TestEnum::Tuple(a, b, c) = from_slice(&buf).unwrap() {
|
|
assert_eq!(a, 0x60fb4d0d);
|
|
assert_eq!(b, 0xc4984065f5dbbf3c);
|
|
assert_eq!(c, &[0xa9ca, 0xb9e7, 0x963b, 0x74fa, 0x82b2]);
|
|
} else {
|
|
panic!();
|
|
}
|
|
|
|
let buf = [
|
|
97, 0x0b, 0xc2, 0xfd, 0xd6, 0xa1, 0xed, 0x8a, 0x12, 0x46, 0xd4, 0x20, 0xaf, 0xcc, 0x88,
|
|
0x8c, 0xd2,
|
|
];
|
|
if let TestEnum::Struct { data, footer } = from_slice(&buf).unwrap() {
|
|
assert_eq!(
|
|
&*data,
|
|
&[0xc2, 0xfd, 0xd6, 0xa1, 0xed, 0x8a, 0x12, 0x46, 0xd4, 0x20, 0xaf]
|
|
);
|
|
assert_eq!(footer, 0xcc888cd2);
|
|
} else {
|
|
panic!();
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn unknown_enum_variant() {
|
|
#[derive(Debug, Serialize, Deserialize)]
|
|
enum Unknown {
|
|
#[serde(rename = "7")]
|
|
Foo,
|
|
}
|
|
|
|
from_slice::<Unknown>(&[1]).expect_err("Deserialized unknown enum variant");
|
|
}
|
|
|
|
#[test]
|
|
fn complex_struct() {
|
|
#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
|
|
struct Address<'a> {
|
|
#[serde(borrow, with = "serde_bytes")]
|
|
bytes: Cow<'a, [u8]>,
|
|
}
|
|
|
|
#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
|
|
struct Info<'a> {
|
|
#[serde(borrow)]
|
|
addrs: Vec<Address<'a>>,
|
|
expiration: u64,
|
|
}
|
|
|
|
#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
|
|
struct Upgrade<'a> {
|
|
index: u32,
|
|
#[serde(borrow)]
|
|
info: Info<'a>,
|
|
}
|
|
|
|
let expected = Upgrade {
|
|
index: 7,
|
|
info: Info {
|
|
addrs: vec![
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x4f, 0x58, 0x50, 0x9e, 0xb6, 0x8b, 0x9d, 0x19, 0x9e, 0x00, 0x92, 0x5e,
|
|
0xcb, 0x0f, 0xfd, 0x53, 0x80, 0x06, 0xfe, 0xc3,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0xb6, 0x7c, 0xd5, 0xef, 0x88, 0x00, 0xa7, 0xbc, 0xba, 0x2e, 0xfb, 0x91,
|
|
0x09, 0x33, 0xee, 0x51, 0xdd, 0x02, 0x24, 0x35,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x2b, 0x05, 0x87, 0x83, 0x8a, 0x2a, 0xe9, 0xc4, 0x0e, 0x54, 0x28, 0x11,
|
|
0xc2, 0x99, 0x33, 0xa8, 0x65, 0xd4, 0x6c, 0x3d,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x08, 0xd2, 0xb5, 0x03, 0x64, 0xb5, 0x27, 0x7f, 0xf0, 0xaf, 0x90, 0x6d,
|
|
0x03, 0x10, 0x21, 0xb3, 0x20, 0xdd, 0xfb, 0xda,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0xec, 0xc9, 0x7d, 0x9d, 0x6c, 0x68, 0x4e, 0x43, 0x6e, 0x39, 0x51, 0xe0,
|
|
0xa8, 0x6f, 0x49, 0xf1, 0xf4, 0xd3, 0xdb, 0x2a,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x11, 0xed, 0x25, 0xe6, 0x6b, 0xed, 0x56, 0x25, 0x87, 0xb4, 0x1c, 0x94,
|
|
0x9c, 0x81, 0xcf, 0x2c, 0x34, 0xb8, 0x5e, 0xc3,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x3d, 0x82, 0xcb, 0x29, 0xe8, 0xa7, 0x34, 0x37, 0x3a, 0x46, 0x07, 0xa4,
|
|
0xf2, 0xb3, 0x94, 0xb0, 0x73, 0xed, 0x86, 0x3b,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x99, 0xa4, 0xb5, 0x89, 0x01, 0x59, 0x18, 0x01, 0x08, 0x53, 0xcf, 0x17,
|
|
0x21, 0x14, 0x65, 0xcf, 0x05, 0x7f, 0xaa, 0x5d,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0xcc, 0x38, 0x3b, 0x85, 0xde, 0xc2, 0x59, 0xe6, 0x22, 0xee, 0xa4, 0xea,
|
|
0x83, 0x72, 0x08, 0x7e, 0xdf, 0xea, 0xe1, 0xc3,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x7a, 0xd9, 0x4d, 0x53, 0x9c, 0xc2, 0xff, 0xe3, 0x1d, 0xd6, 0x60, 0x78,
|
|
0x31, 0xb3, 0x2f, 0x76, 0x12, 0xb7, 0xc7, 0xaf,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x10, 0x88, 0xf6, 0x6f, 0x1d, 0x27, 0x2d, 0xad, 0x5b, 0x48, 0xca, 0xaf,
|
|
0xba, 0x63, 0x99, 0xbe, 0x23, 0x3b, 0xd5, 0xca,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0x49, 0x91, 0xa9, 0x0f, 0x47, 0xcd, 0xfe, 0xdb, 0xd6, 0xfb, 0xb3, 0xe9,
|
|
0xa4, 0xc2, 0xc2, 0x15, 0xb3, 0xe7, 0xe5, 0xb6,
|
|
]),
|
|
},
|
|
Address {
|
|
bytes: Cow::Owned(vec![
|
|
0xdd, 0xe3, 0x77, 0xb0, 0xc3, 0x1b, 0x56, 0x2c, 0x90, 0x67, 0x88, 0xc6,
|
|
0xc5, 0xa5, 0xd8, 0xb8, 0xee, 0xc3, 0xa0, 0x87,
|
|
]),
|
|
},
|
|
],
|
|
expiration: 0x90e4_9c5d_cb20_0792,
|
|
},
|
|
};
|
|
let buf = [
|
|
0x00, 0x00, 0x00, 0x07, 0x0d, 0x14, 0x4f, 0x58, 0x50, 0x9e, 0xb6, 0x8b, 0x9d, 0x19,
|
|
0x9e, 0x00, 0x92, 0x5e, 0xcb, 0x0f, 0xfd, 0x53, 0x80, 0x06, 0xfe, 0xc3, 0x14, 0xb6,
|
|
0x7c, 0xd5, 0xef, 0x88, 0x00, 0xa7, 0xbc, 0xba, 0x2e, 0xfb, 0x91, 0x09, 0x33, 0xee,
|
|
0x51, 0xdd, 0x02, 0x24, 0x35, 0x14, 0x2b, 0x05, 0x87, 0x83, 0x8a, 0x2a, 0xe9, 0xc4,
|
|
0x0e, 0x54, 0x28, 0x11, 0xc2, 0x99, 0x33, 0xa8, 0x65, 0xd4, 0x6c, 0x3d, 0x14, 0x08,
|
|
0xd2, 0xb5, 0x03, 0x64, 0xb5, 0x27, 0x7f, 0xf0, 0xaf, 0x90, 0x6d, 0x03, 0x10, 0x21,
|
|
0xb3, 0x20, 0xdd, 0xfb, 0xda, 0x14, 0xec, 0xc9, 0x7d, 0x9d, 0x6c, 0x68, 0x4e, 0x43,
|
|
0x6e, 0x39, 0x51, 0xe0, 0xa8, 0x6f, 0x49, 0xf1, 0xf4, 0xd3, 0xdb, 0x2a, 0x14, 0x11,
|
|
0xed, 0x25, 0xe6, 0x6b, 0xed, 0x56, 0x25, 0x87, 0xb4, 0x1c, 0x94, 0x9c, 0x81, 0xcf,
|
|
0x2c, 0x34, 0xb8, 0x5e, 0xc3, 0x14, 0x3d, 0x82, 0xcb, 0x29, 0xe8, 0xa7, 0x34, 0x37,
|
|
0x3a, 0x46, 0x07, 0xa4, 0xf2, 0xb3, 0x94, 0xb0, 0x73, 0xed, 0x86, 0x3b, 0x14, 0x99,
|
|
0xa4, 0xb5, 0x89, 0x01, 0x59, 0x18, 0x01, 0x08, 0x53, 0xcf, 0x17, 0x21, 0x14, 0x65,
|
|
0xcf, 0x05, 0x7f, 0xaa, 0x5d, 0x14, 0xcc, 0x38, 0x3b, 0x85, 0xde, 0xc2, 0x59, 0xe6,
|
|
0x22, 0xee, 0xa4, 0xea, 0x83, 0x72, 0x08, 0x7e, 0xdf, 0xea, 0xe1, 0xc3, 0x14, 0x7a,
|
|
0xd9, 0x4d, 0x53, 0x9c, 0xc2, 0xff, 0xe3, 0x1d, 0xd6, 0x60, 0x78, 0x31, 0xb3, 0x2f,
|
|
0x76, 0x12, 0xb7, 0xc7, 0xaf, 0x14, 0x10, 0x88, 0xf6, 0x6f, 0x1d, 0x27, 0x2d, 0xad,
|
|
0x5b, 0x48, 0xca, 0xaf, 0xba, 0x63, 0x99, 0xbe, 0x23, 0x3b, 0xd5, 0xca, 0x14, 0x49,
|
|
0x91, 0xa9, 0x0f, 0x47, 0xcd, 0xfe, 0xdb, 0xd6, 0xfb, 0xb3, 0xe9, 0xa4, 0xc2, 0xc2,
|
|
0x15, 0xb3, 0xe7, 0xe5, 0xb6, 0x14, 0xdd, 0xe3, 0x77, 0xb0, 0xc3, 0x1b, 0x56, 0x2c,
|
|
0x90, 0x67, 0x88, 0xc6, 0xc5, 0xa5, 0xd8, 0xb8, 0xee, 0xc3, 0xa0, 0x87, 0x90, 0xe4,
|
|
0x9c, 0x5d, 0xcb, 0x20, 0x07, 0x92,
|
|
];
|
|
|
|
let actual = from_slice(&buf).unwrap();
|
|
assert_eq!(expected, actual);
|
|
}
|
|
}
|